Out of video memory error while working on data table

I’m attempting to make entries into a data table (contains 3 name fields and a custom data structure with 12 floats). After opening it, some time between 3 seconds to 2 minutes, I will receive the following error.

“Out of video memory trying to allocate to a rendering resource. Make sure your video card has the minimum required memory and/or closing other applications that are running. Exiting…”

I’m not running anything else, I only have a blank level open in the background, and I’ve just installed the latest graphics drivers to my machine (video card is a Nvidia GTX 670M, onboard video is Intel HD 3000) and restarted my machine. I’m including a text file of my dxdiag.

Has anyone else encountered this issue within a data table? I have been working heavily in UE for almost 6 months now and have not had an issues until this. Thank you in advance!
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I’ve set breakpoints in my blueprint - any time I hover over a variable that uses this data structure, I get the same error and the editor crashes.

I’ve tried recreating and re-adding this data structure. Nothing has helped so far. Has anyone else seen this? Any ideas of something that I should try?

I think Intel HD might be issue here. If not keep in mind that now days desktop is also GPU accelerated and they are polygons and textures

Unfortunately, I think you might be right. My co-developer has no issues with the data tables/structure. I’ve even gone through the steps of setting my Nvidia card as the primary card for the UDK: Redirect Notice

That didn’t help. Has anyone had success getting a dedicated GPU to run all aspects of the engine? My laptop is decent and I’d like to not have to buy a new one just because my onboard video card is causing an issue.


I’d like to ensure that you aren’t making the Nvidia card the primary card for an old install of UDK (Unreal Engine 3 Development Kit). The program name for UE4 is UE4Editor.exe.


Hi ,

Thank you for taking a look at this.

I added UE4Editor.exe, along with pretty much every .exe that I could find within the C:\Program Files\Epic Games\4.8\Engine\Binaries\Win64 folder and set them to use the High-performance NVIDIA Processor. That didn’t work, so I changed the Preferred Graphics Processor to use the NVIDIA card on the Global Settings tab. That didn’t work either.

I don’t know if this is related or not, but I see that the menus in the game are duplicating themselves in a quirky way. I can’t remember when this started happening, but I think it may be related. I’m going try reinstalling UE4 tonight and see if that helps – At least I can rule that out if nothing else.

Can you also ensure your GPU drivers are up to date? And if it’s using Nvidia Optimus, please make sure that’s up to date. Also check your laptop manufacturers website for any additional driver updates that may be available.


My graphics drivers are all up to date, as is every other pertinent driver on my laptop. I’ve reinstalled UE4 and that I am still getting this video error whenever I’m working with large, 10+ fields data sources.

Do you have any other ideas as to things I could try?

In answer to your question about Nvidia Optimus – I’m fairly sure that I have that.

I found this post: How can I make my computer use NVIDIA GPU instead of Intel GPU? - Platform & Builds - Unreal Engine Forums which didn’t yield much help, more folks in my situation without a solution.

I don’t have an option to set my video card within my bios, it’s fairly basic as well. I’ve disabled Windows Aero to attempt to squeak out more video RAM. I’ve even disabled my second monitor to see if that worked. I’ve adjusted my Intel settings to provide maximum performance. I have no idea what else I can do here.

So I did some digging on the interwebs. It looks like Nvidia Optimus has trouble with 64bit software(most games are running 32bit) in Windows 7.

The solution has nothing to do with UE4 and we cannot take any responsibility for any issues that arise from attempting this fix. It is at your own risk.

That being said, it doesn’t appear to be toooooo invasive. Check this out:


PS - All credit for inspiring this path of investigation goes to the very last post in that other AnswerHub thread by user FakeTruth

In case that link goes down, this is a quote from the post:

My solution - works without reboot (!):
After a deep scan - i used sysinternals Tools to understand when optimus is being invoked, and why it cannot start to activate the right GFX choosen in the nvidia control Center.
It is - as i thought - a really simple Problem in the registry.
Each time an appliction starts, nvidia Needs to be triggered to start correctly.
This is done by a registry entry : App_InitDlls
Here you can tell Windows what Needs to be triggered when an app starts.

x32bit: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows
x64bit: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows

There you find the link to the NVINIT.DLL or NVINITx.DLL which lets nvidia invoking the right GFX.

But under the reg key RequireSignedAppInit_DLLs the System requires a signed DLL to be invoked/triggered - the value of the key is 1 (true).
After Setting this value to 0 (false) - my System runs perfectly!!

set the following keys to 0
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\RequireSignedAppInit
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows\RequireSignedAppInit

You do not Need to restart the System - you can test it directly!

It seems that Nvidea missed to sign These DLLs … thats all.

Hi ,

Thank you for sending that. I gave it a shot and I was having the same issue that several other users were; I didn’t have the same folder that he mentioned in his post, but I found two keys that was named almost the same thing (LoadAppInit_DLLs) as what he mentioned along the same path. I disabled those and tried again in UE editor. I managed to get a crash log instead of the video card error. I re-enabled them for now, but would you like me to include the crash log to see if that’s helpful?

Thanks again for the help,


Could be helpful. Go ahead and throw the crash log into a txt file and attach it.

I’m away from my laptop until Sunday night. I’ll post it once I get back.

Thanks .

– As promised. Let me know if you need any more information.

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Can you try going back into regedit? Where you weren’t able to find the RequireSignedAppInit files, can you right click and create a new DWord, then name it “RequiredSignedAppInit” and give it a value of 0.

With any luck that should work.

We cannot assume any responsibility for issues this could cause. This is a known issue with Nvidia Optimus and this is a user supplied workaround.


Hi ,

I added a new RequiredSignedAppInit registry key with a value of 0 into
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows\

I’m still receiving the same error from my first post. I also tried changing LoadAppInit_DLLs to zero and still received the error. Thank you for offering the solution.


Just making absolutely certain that you did it in both locations, not just the one.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\RequireSignedAppInit HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Windows\RequireSignedAppInit

I’m going to try to look into this more as we are making a GPU troubleshooting guide, but as it seems Nvidia related, I would also suggest posting to their support on this issue and see what they have to say.

Correct, I added the registry key to both locations and still received the video memory error. Thanks for continuing to look at this, I’ll see if I can get any support from NVidia.

Is this bug the same as this? Unreal 5.3.1 bug - Out of video memory (Reproduce)